We might as well call 2012 the year of the 3D map. We've seen both Apple and Google show their cards, but GigaOM now hears that Amazon has jumped in by acquiring newcomer UpNext. The details are scant, but the approximately $2.5 million deal would give Amazon the startup's 3D, Android-native maps of 50 US cities, complete with navigation and extra information about notable buildings. The online reseller hasn't
